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From: Ingo Molnar <mingo@elte.hu>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: "Borislav Petkov" <bp@alien8.de>,
	"Peter Zijlstra" <a.p.zijlstra@chello.nl>,
	"Luck, Tony" <tony.luck@intel.com>,
	linux-kernel@vger.kernel.org, ying.huang@intel.com,
	tglx@linutronix.de, akpm@linux-foundation.org,
	mchehab@redhat.com, "Frédéric Weisbecker" <fweisbec@gmail.com>,
	"Arnaldo Carvalho de Melo" <acme@redhat.com>,
	"Arjan van de Ven" <arjan@infradead.org>,
	"Mathieu Desnoyers" <mathieu.desnoyers@efficios.com>
Subject: Re: [RFC/Requirements/Design] h/w error reporting
Date: Wed, 10 Nov 2010 19:52:13 +0100	[thread overview]
Message-ID: <20101110185213.GJ22410@elte.hu> (raw)
In-Reply-To: <1289412587.12418.179.camel@gandalf.stny.rr.com>


* Steven Rostedt <rostedt@goodmis.org> wrote:

> On Wed, 2010-11-10 at 18:41 +0100, Ingo Molnar wrote:
> 
> > > It would also be cool to be able to allocate those buffers as early as possible, 
> > > even if before MCA is enabled, so that I won't have to copy MCE data which got 
> > > logged before the tracing subsystem got enabled to the buffers proper.
> > 
> > We could even have some (small) statically enabled build-time buffer that could be 
> > enabled straight away before any allocators are enabled.
> 
> I'm not sure it needs to be small. We can have a persistent buffer that may be 
> resized at any time. It can start off small, or with a kernel command line, be as 
> big as you want it.

Sure.

> Basically, what ftrace has now.
> 
> Also, with a way that root user can get a handle on this buffer, and just trace 
> global events with it.

Yeah.

Thanks,

	Ingo

  reply	other threads:[~2010-11-10 18:52 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-10  0:56 Luck, Tony
2010-11-10 10:14 ` Ingo Molnar
2010-11-10 14:40   ` Steven Rostedt
2010-11-10 14:43     ` Peter Zijlstra
2010-11-10 15:09       ` Steven Rostedt
2010-11-10 15:28         ` Mathieu Desnoyers
2010-11-10 15:30         ` Peter Zijlstra
2010-11-10 15:53           ` Steven Rostedt
2010-11-10 16:52           ` Steven Rostedt
2010-11-10 17:05             ` Borislav Petkov
2010-11-10 17:41               ` Ingo Molnar
2010-11-10 17:50                 ` Luck, Tony
2010-11-10 18:09                 ` Steven Rostedt
2010-11-10 18:52                   ` Ingo Molnar [this message]
2010-11-10 17:25             ` Frederic Weisbecker
2010-11-10 17:48           ` Ingo Molnar
2010-11-10 18:05             ` Steven Rostedt
2010-11-10 18:23               ` Luck, Tony
2010-11-10 18:31                 ` Peter Zijlstra
2010-11-10 18:49                   ` Ingo Molnar
2010-11-10 18:24               ` Peter Zijlstra
2010-11-10 18:41                 ` Ingo Molnar
2010-11-10 19:00                   ` Steven Rostedt
2010-11-10 19:11                     ` Ingo Molnar
2010-11-10 19:11                     ` Frederic Weisbecker
2010-11-10 19:30                       ` Ingo Molnar
2010-11-10 19:48                         ` Steven Rostedt
2010-11-10 20:23                       ` Tracing Requirements (was: [RFC/Requirements/Design] h/w error reporting) Mathieu Desnoyers
2010-11-10 20:54                         ` Luck, Tony
2010-11-10 21:06                           ` Steven Rostedt
2010-11-10 21:34                             ` Steven Rostedt
2010-11-10 22:51                           ` Mathieu Desnoyers
2010-11-10 23:12                             ` Thomas Gleixner
2010-11-10 23:20                               ` Steven Rostedt
2010-11-10 23:45                                 ` Thomas Gleixner
2010-11-11 18:25                                 ` Ted Ts'o
2010-11-10 23:28                               ` Mathieu Desnoyers
2010-11-10 23:58                                 ` Thomas Gleixner
2010-11-11  9:17                                   ` Ingo Molnar
2010-11-11 13:37                                     ` Mathieu Desnoyers
2010-11-10 21:30                         ` Frederic Weisbecker
2010-11-10 21:54                           ` Steven Rostedt
2010-11-10 22:19                             ` Frederic Weisbecker
2010-11-10 22:49                             ` Frederic Weisbecker
2010-11-11  0:11                           ` Mathieu Desnoyers
2010-11-11 16:10                             ` Steven Rostedt
2010-11-11 16:34                               ` Mathieu Desnoyers
2010-11-10 19:16                 ` [RFC/Requirements/Design] h/w error reporting Steven Rostedt
2010-11-10 19:38                 ` Steven Rostedt
2010-11-10 18:27               ` Ingo Molnar

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